ShapeDetection: support CanvasImageSource as detect() source

third_party/WebKit/LayoutTests/fast/shapedetection/shapedetection-security-test.html

Index: third_party/WebKit/LayoutTests/fast/shapedetection/shapedetection-security-test.html
diff --git a/third_party/WebKit/LayoutTests/fast/shapedetection/shapedetection-security-test.html b/third_party/WebKit/LayoutTests/fast/shapedetection/shapedetection-security-test.html
index 56def7be6c874f4e4374539ff0a9b73bf52fb375..9fdfd5bc106630f5135a8ff0c4266c97d673c046 100644
--- a/third_party/WebKit/LayoutTests/fast/shapedetection/shapedetection-security-test.html
+++ b/third_party/WebKit/LayoutTests/fast/shapedetection/shapedetection-security-test.html
@@ -3,9 +3,6 @@
 <script src=../../resources/testharnessreport.js></script>
 <script>
 
-// TODO(xianglu): Consider adding tests for image with only one dimension
-// equal to zero.
-
 // Returns a Promise that is resolve()d if detect() fails.
 function detectFaceAndExpectError(imageUrl) {
   return new Promise(function(resolve, reject) {
@@ -26,15 +23,6 @@ function detectFaceAndExpectError(imageUrl) {
   });
 }
 
-// This test verifies that FaceDetector will reject an empty image.
-promise_test(function(t) {
-  return detectFaceAndExpectError("")
-      .then(function(error) {
-        assert_equals(error.name, "InvalidStateError");
-        assert_equals(error.message, "HTMLImageElement is empty.");
-      });
-}, "FaceDetector should reject empty images with InvalidStateError.");
-
 // This test verifies that FaceDetector will reject an undecodable image.
 promise_test(function(t) {
   return detectFaceAndExpectError("../../imported/wpt/images/broken.png")